Installation Instructions
Seite/Page 110 - Kaptitel/Chapter 6: Installation Instructions 18.12.15
6.16.3 Electronic voltage control xControl
The xControl controls the generator voltageand motor speed. An actuator/servo on the injection pump can
increasethe engine speed compared to the idle speed.
If the generator runs without load, the frequency should be approx. 48,5 - 49 Hz (50 Hz System) or 58,5 - 59 Hz (60
Hz System). The frequency (equates to the speed) can be increased by up to 8%. This ensures that the engine
speed is increased when there is an extra load. The maximum speed is achieved when 80% load is reached.
The speed gauge is governed and limited by an adjusting screw, above and below. Adjustment of this screw may not
occur without the expressive approval of the manufacturer.
All signals pass through the circuit board in the xControl box. The signal impulse for the Servo is passed to the
electric motor.
6.16.4 Connection to the AC on-board power supply
6.16.4.1 Protective conductor
The generator is equipped with a PEN protective conductor system as standard. A Neutral and a PE line are
seperate on the power out cable.
If a separate protective conductor is necessary (i. e. according to national safety regulations), the bridge circuit at the
generator and the AC-Control box between neutral and generator housing has to be removed. Afterwards a
separate protective conductor has to be installed and connected to all the system’s attached metallic housings.
It is recommended to provide a voltage indication (voltmeter) and also a power indication, if applicable, in the
installation system. The voltmeter (and power indication, if applicable) has to be installed behind the selector switch
so that the voltage for every possible voltage source may be indicated. A separate voltmeter for the generator itself,
is therefore not required.
6.16.4.2 Electrical fuse
It is absolutely essential that the electrical system installation is inspected by a qualified electrical technician. The
generator should have its own AC input electrical fuse. This fuse should be sized so that the rated current of the
generator on each of the individual phases is not exceeded by more than 25%.
Data for gensets with power output greater than 30 kW on request!
The fuses must be of the slow type. A 3-way motor protection switch must be installed to protect the electrical motor.
Required fuse see Tabelle 11.5-1, “Nennströme,” auf Seite 233
6.16.4.3 Required cable crosssections
The following recommended electrical cable dimensions (cross sections) are the minimum required sizes for a safe
installation. (see “Cable cross section” on page 200.)
6.16.4.4 Disconnector - power source selector (three way cam switch)
A power source selector switch must be installed between the generator (or if applicable, AC-Control box)
and the ship's electrical supply system. This switch must ensure that all AC consumers can be switched off
at once. This switch should also be installed to keep the generator and shore (grid) power systems
To Next Page
Loading...
